Not hard to program a spell check to search for ableist words or phrases, even for those not in the know. But you gotta have someone in the room who thinks to do this. That they don’t/didn’t is probably the core problem.

Microsoft Word added a entire section of 'inclusiveness' checks to its grammar and spell check a few years back and most of them are on by default (doesn't replace a sensitivity reader but reinforces what org policy should already say as people are typing)